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Lens of aspheric surface

An aspheric, lens technology, applied in glasses/goggles, optics, instruments, etc., can solve the problems of small Abbe number, visual fatigue, large dispersion, etc.

Inactive Publication Date: 2007-02-21
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Of course, we also know that the higher the refractive index, the smaller the Abbe number of the material, and the greater the dispersion. Such lenses will easily cause visual fatigue during use.

Method used

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  • Lens of aspheric surface
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  • Lens of aspheric surface

Examples

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Embodiment Construction

[0051] A preferred embodiment of the present invention is described in detail as follows:

[0052] This aspherical lens is designed according to the following requirements:

[0053] (1) Its base arc is determined by the Tscheming ellipse of the aspheric surface, which satisfies the following formula:

[0054] k 1 ( D - D 2 ) 3 D + k 2 D 2 3 D + n + 2 4 n ( n - 1 ) 2 ...

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Abstract

A no-spherical surface lens confirms basic arc of lens according to Tscherning oval of non-spherical surface and it is necessary to change r 1 and r 2 but to remain [(1 / r1)-(1 / r2)] unchanged if diopter F of lens is basically not changed according lens formula. The way for preparing said lens is suitably to be used to prepare lens made of low reflectively material.

Description

technical field [0001] The invention relates to an aspherical lens used in the optical field. Background technique [0002] Present optical lenses not only have single-light spherical lenses, but also spherical-cylindrical combination lenses, as well as multi-diopter combination lenses on a single lens. The already popular bifocal glasses, trifocal glasses, and progressive multifocal glasses are the best annotations. Especially the progressive multi-focal glasses, its scope of use will be more popular and extensive. With the popularization of the concept of progressive multifocal glasses, people know that not only can there be multiple diopters on a single eyeglass lens, but it can even allow blind spots that cannot provide clear vision. However, in order to make this lens meet the needs of visual function and ensure the normal and convenient use of the glasses, the key is how to set the positions and ranges of different diopters, and how to reasonably distribute and perfe...

Claims

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Application Information

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IPC IPC(8): G02C7/00
Inventor 张玥陈东帆
Owner SHANGHAI UNIV